Since the postfix ++ exists in languages, the following will always make v[0] ← v[1]: Now with destructuring assignment, it’s different – I could only test with Chrome and Firefox: Both would end up with i expected value of 1. I tried many other king of variable assignments in the left part of a destructuring assignment and all the time,
Tag: destructuring
TypeScript destructure array of objects, both first object and a value within it
I have an array of objects I want to destructure, retrieving both the first object and a value within it: In Javascript this works; but in TypeScript this returns I’m trying to figure out how to type that in order to avoid the error. Answer As firstObjectInArray isn’t part of your declaration (it’s just an expression), it’s an assignment to
Destructuring a function call
Assuming the following code: EsLint gives out the following error: While the current code is clear and concise, if I still wanted to destructure the code and make EsLint happy, how could I do it ? Answer The docs for this rule say that properties of props should be destructured before using them, so just do that:
How can I ignore certain returned values from array destructuring?
Can I avoid declaring a useless variable when array destructuring when I am only interested in array values beyond index 0? In the following, I want to avoid declaring a, I am only interested in index 1 and beyond. Answer Can I avoid declaring a useless variable when array destructuring when I am only interested in array values beyond index
Using destructuring to define optional parameters in ES6
I have a function that performs an AJAX call, as such: Where the second parameter is optional, i.e. in some cases that parameter is required, in others it isn’t: and: In the second instance I’d like to be able to omit the undefined parameter and I believe assigning options/defaults by way of destructuring is the answer (as per this example:
object destructuring: how to use intermediate nested property
Is there a way to get access to all three in one destructuring call? I want to avoid two calls like so: Answer The closest I can come up with is: Though I’d use let instead, if I’m using ES6 😉
One-liner to take some properties from object in ES 6
How one can write a function, which takes only few attributes in most-compact way in ES6? I’ve came up with solution using destructuring + simplified object literal, but I don’t like that list of fields is repeated in the code. Is there an even slimmer solution? Answer Here’s something slimmer, although it doesn’t avoid repeating the list of fields. It